Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10014-P) for 2017-2023 Duramax L5P

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The Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10014-P) is a high-quality, direct-fit replacement for 2017–2023 GM Duramax L5P diesel engines. Designed for durability and performance, it features hardened valve seats, enhanced coolant flow, and upgraded valve guides. Suitable for both stock and modified engines, this fully assembled cylinder head offers improved reliability and efficiency under demanding conditions, making it ideal for rebuilds or performance upgrades.

Total: $1,149.00
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Description

The Fleece Freedom Series Cylinder Head – Passenger Side (FPE-61-10014-P) is a premium replacement component designed specifically for 2017-2023 GM Duramax L5P diesel engines. Engineered for durability and performance, this cylinder head is built to handle the increased demands of high-performance and heavy-duty applications. It comes fully assembled with hardened valve seats, improved coolant flow passages, and upgraded valve guides to ensure optimal reliability under extreme conditions. Ideal for both stock and modified engines, the Freedom Series head is a direct-fit solution that maintains OEM fitment while offering enhanced longevity and performance. Whether you’re rebuilding your engine or upgrading for better efficiency and power, this Fleece cylinder head is a trusted choice for durability and precision.

Additional information
Weight 48.0 lbs
Dimensions 24.0 × 14.0 × 10.0 in
Fitment

Fitment

  • 2017 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2018 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2019 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2020 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2021 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2022 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
  • 2023 GM Silverado/Sierra 2500/3500 6.6L L5P Duramax
Features

Features

  • Re-manufactured OE casting
  • New valves, valve guides, springs, and valve seals
  • Pressure and leak tested
  • Multi-angle valve job
Installation

Installation

  • We recommend using GM head gasket (Grade C, 12727486)
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About brand
Fleece Performance Engineering is a diesel performance manufacturer focused on reliability and precision engineering. The company designs parts that solve common diesel issues while supporting added power. Fleece products support daily driving, towing, and performance diesel trucks. Fleece engineers fuel system components, turbochargers, electronics, and emissions-compliant upgrades in house. Their parts improve efficiency, drivability, and long-term engine protection. Each product is tested for proper fit and consistent performance. Diesel owners trust Fleece for dependable upgrades. Whether maintaining a work truck or building for performance, Fleece delivers proven solutions designed for real-world use.
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